<!DOCTYPE html>
<html>
<head>
	<title></title>
	<meta charset="utf-8">
</head>
<body>

</body>
</html>
<script type="text/javascript">
	console.log(Math.abs(100));

	console.log(Math.abs(-100));

	console.log(Math.round(5.4),Math.round(5.6));

	console.log(Math.ceil(5.4),Math.ceil(5.6));

	console.log(Math.floor(5.4),Math.floor(5.6));

	var b = Math.pow(1024,1);

	var kb = Math.pow(1024,2);

	var g = Math.pow(1024,3);

	var t = Math.pow(1024,4);

	console.log(b,kb,g,t);

	// function run() {
	// 	console.log(parseInt(Math.random()*10 + 1));
	// }

	// setInterval(run,1000);

	
</script>